Wcoghill,
I shouldn't even try to answer this question, but my understanding is just any company which wishes to exchange data with an application like an EMR uses the Health Level 7 to do so. In our area, we could choose to interface with ALI using HL7 for a one-time fee of around $5,000. I know in some cities that fee can be waived for communication with a lab if there are many competing labs since they want you business.
This is where I certainly may be wrong, but my guess is that all of the links that Jon provides in the administrative section use HL7 and that AC is likely to be HL7 compliant. There are also companies which provide software when the certain version of HL7 is not compatible such as Chameleon and Iguana. I don't know the specifics but I would think that Jon has to figure out the ins and outs of the links to these various companies.
Vinny, correct me if I am completely off base. : )
